Centrifugal machine



(No Model.)

2 SheetsSheet 2.

B. B. SNYDER & J. J. SELDNER.

CENTRIPUGAL MACHINE.

No. 598,296. Patented 61). 1,1898.

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ATENT BENJAMlN B. SNYDER AND JONAS J. SELDNER, OFBALTIMORE, MARYLAND.

CENTRIFUGAL MACHINE.

SPECIFICATION forming part of Letters Patent No. 598,296, dated February1, 1898.

Application filed April 19, 1897. Serial No. 632,819. (No model.)

To all whom it may concern.-

Be it known that we, BENJAMIN B. SNYDER and J ONAS J. SELDNER, citizensof the United States, residing in the city of Baltimore and State ofMaryland, have invented certain new and useful Improvements inCentrifugal Machines, of which the following is a specifica tion.

' This invention consists in an improvement in centrifugal machines.

The object of the invention is to facilitate the charging anddischarging of the machine. This is accomplished by providing the outerstationary casing with an annular cover which can be readily removed oropened andby providing the rotary portion of the machine with aremovable cover and connecting the bag or basket which holds thematerial to be operated upon to this latter cover. The bottom of the bagor basket is preferably arranged so that it can be opened when removedfrom the machine.

For a detailed description of the invention reference is had to thefollowing specification and to the accompanying drawings,in wl1ich--Figure 1 is a plan View of a machine embodying our invention. Fig. 2 isa vertical section on the line 2 2 of Fig. 1. Fig. 3 shows an empty baghung upon the removable cover.

Fig. 4 shows a loaded bag in the position which it assumes when beingremoved from the centrifugal. Fig. 5 is a view of a basket which may insome instances be substituted for the bag, and Fig. 6 shows a modifiedcover for the casing.

Referring to the drawings, 1 indicates an outer stationary casing whichis supported upon a suitable standard or frame 2. This casing isprovided with an annular cover 3,

which is arranged to be removed or opened to facilitate loading andunloading the centrifugal. As'shown, this cover consists of a series ofsections 4, provided with hinges 5, upon which they may be turned backout of the way. If desired, the section may be conis adapted tofitwithin the cylinder 7.

.t-hrough a ring 23 at the bottom.

quirement is that it shall be convenientlyremovable. Within the casing 1is a rotating cylinder 7, of wire-netting or perforated sheet metal,such as is usually used in centrifugal machines. The cylinder 7issupported on y bolts 12, preferably passing from the bottom of thecylinder through the oover, which is thus fastened down by the nuts 13.Other fastening devices may be used to connect the cover 11 detachablywith the cylinder, the particular means being of minor importance. Thecover 11 is provided with loops or eyes 14., to which hoisting chains orropes 15 may be connected.

Upon the inner surface of the annular lid or cover 11 is a series ofhooks 16, to which the upper end of a bag 17 is connected. In Fig. 3 wehave shown the preferred form of bag, which is open at the top andbottom. The top is connected to the hooks on the cover 11, said hooksbeing arranged in a circle of considerably less diameter than that ofthe cylinder, so that the bag will pull away from the cylinder as it israised. The lower end of the bag is preferably opened and provided witha series of eyes or rings 18,-through which a cord 19 is loosely strung.19 is drawn tight, it closes the bottom of the bag. The cord ispreferably drawn into the middle of the bag, as shown in Figs. 2and 4.When it is desired to remove the loaded bag When the cord from themachine, the cord 19 is engaged with a rope 20, and as the ropes 15 and20 are raised the latter rope aids materially in carrying the load.

In Fig. 5 we have shown a basket 21, which The cylindrical portion ofthis basket is connected to the cover by means of bolts 22, which passThe bottom 2d of the basket is connected to the ring 23 by a hinge 25,and when closed it can be locked by a bolt 26 or other suitablefastening.

In Fig. 6 we have illustrated a simple form of cover for the outercylinder which may be used in lieu of the hinged covers 4. This cover 27consists of sections of leather, rubber, or other flexible and durablematerial fastened at their outer edges to the casing. These sectionswill stand normally in proper position, but will yield to permit thecover 3 to be withdrawn or inserted together with the attached bag orbasket.

The invention is not limited to a bag having an open bottom. In someinstances a bag having a closed bottom may be used, in which case thebag could be detached from the hooks to facilitate emptying-it,or itcould be emptied by inverting it. The open-bottom bag is, however,preferred.

The operation of the invention is as follows: The bottom of the bag isclosed by drawing the string 19, and the bag, which is attached to thecover 11, is lowered into the cylinder? as shown in Fig. 2. The cover 11is then fastened by means of the nuts 13, and the elevating-ropes 15 and20 are disconnected. The material to be operated upon is then shoveledor dumped into the bag and the cylinder rotated in the usual manner.Before starting the machine the cover 3 of the outer casing is closedand fastened, if necessary.

When it is required to remove the material, the covers 3 are thrown backand the elevatingropes 15 connected to the lid 11 and the rope 20 to theclosing-string 19 at the bottom of the bag. The nuts 13 are then removedand the cover and bag are raised by the elevatingropes, the cord 19holding the bottom closed and approximately in the position shown inFig. 4. If the hooks 16 were at the outer part of the cover, the bagcould not well be lifted, as it would tend to stick to the side of thecylinder 7, but by arranging the hooks at some distance from the outerperiphery of the cover the bag is drawn inward as it is elevated andgradually separates from the cylin der, beginning at the top. The dottedlines in Fig. 2 show the position of the bag when it is partly loosenedfrom the cylinder, and Fig. 4 shows its shape when it isentirelysuspended. The contents of the bag may be dumped by simplydisconnecting the rope 20 from the gathering-string 19, when the bottomof the bag will automatically open. It is advisable to have two covers11 and two bags in order to economize the time of the machine, an emptybag being placed in the machine immediately after the full one isWithdrawn.

Having described our invention, what we claim, and desire to secure byLetters Patent, 1s-

1. In a centrifugal machine, the combination with the outer stationarycasing, of a rotating cylinder, a removable annular cover for saidcylinder, means for raising the cover, and a receptacle, attached tosaid cover, said receptacle being adapted to fit within the cylinder andprovided with a bottom opening, and means for closing the same,substantially as described.

2. In a centrifugal machine, the combination of a rotating cylinder, aremovable cover for said cylinder, fastenings on said cover at somedistance from the outer Wall of the cylinder and a bag adapted to fitagainst said outer wall when the cylinder is in operation,

said bag having its upper end connected to a series of hooks orfastenings, a receptacle connected to said fastenings, said receptaclebeing arranged to open at the bottom, and means for detachablyconnecting said cover to the rotating cylinder, substantially asdescribed.

4:. In a centrifugal machine, the combination with a rotating cylinder,of. the removable cover therefor, the hooks or fastening devices uponthe under side of said cover, the bag open at both ends and having itsupper end connected to the fastening devices, and its lower end providedwith suitable eyes, and the gathering-string 19 threaded through saideyes, substantially as described.

5. The combination with the removable cover 11, of the eyes 14 on theupper side of the cover, the hooks 16 beneath the cover, the bag havingits upper end connected to the hooks and its lower end provided with agathering-string 19, and the elevating ropes or chains 15, 20, connectedrespectively with the removable cover, and the gathering-string at thebottom of the bag, substantially as de-' scribed.

In testimony whereof we affix our. signatures in presence of twowitnesses.

BENJAMIN B. SNYDER. JONAS J. SELDNER.

Witnesses HENRY J. BROWNING, GEORGE KENT.

